Highest Paying RTP Slots 2026

Every video slot has what is known as an RTP - a return to player percentage. In just a moment, we’ll delve into the specifics of what RTP means and examine the volatility of games. However, the primary purpose of this page is to show you the top RTP slots of 2025. These games offer (typically) the highest payouts and are excellent choices for those looking for lengthier gambling sessions.

What Does RTP Mean?

The RTP, or Return to Player, is a percentage that a video slot is expected to pay out over its lifetime. , it can be described as the average amount of money a slot is expected to pay out. For example, imagine a video slot with an RTP of 95%. This means that for every £100 wagered through the game, it’s expected to pay out £95 back to players; the casino offering the game could expect to make a profit of £5.

Over the long run, the RTP is a fantastic way of calculating how much a game is expected to pay. However, we should point out that RTPs are calculated over millions - sometimes billions - of simulated spins. This means that a slot’s RTP can vary significantly in the short term.

What is Slot Variance?

All slot machines have unique maths models - varying the amount of money they pay out, and the frequency at which they do so. In the online gambling industry, this is known as variance - or volatility - and is a way of determining how a slot machine will likely play.

Generally speaking, there are three different variance models you’ll find with online video slots: low, medium, and high variance. Lower variance machines usually produce frequent - but small - wins, while high variance machines can produce some massive wins, albeit rarely.

Medium variance video slots lie somewhere in the middle - offering players a balance between the two. Most of the highest-paying slots tend to be built around a more volatile maths model - and they often have lower RTPs. However, that doesn’t mean high RTP slots can’t produce big wins - as you’ll see below.

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Highest RTP Slots

Jackpot 6000

Jackpot 6000 is one of NetEnt’s oldest playable releases, built around a 3-row, 3-reel format with just 5 paylines in play. While it’s not the most modern-looking slot in the world, its design flaws are more than made up for by the “Super Metre'' feature. Each time you land a win, you can choose to enter a double wager round. During this round, the Joker symbol increases your chances of forming wins, and this is when the game’s ultra-high RTP of 98.8% comes into play.

Despite offering one of the highest RTPs around, Jackpot 6000 is capable of producing some big wins; the top in-game jackpot is worth a whopping 6,000 coins!

1429 Uncharted Seas

1429 Uncharted Seas is a Thunderkick-produced video slot, first launched in 2016. It’s well-known for its high RTP of 98.50% and offers exciting gameplay. Built around a 5-reel, 3-row format, the game has 25 fixed paylines, and it’s themed around a seafaring expedition set some 600 years in the past.

The free spins bonus round is available at all of the top highest-paying casinos, 1429 Uncharted Seas’ most prominent attraction. This is triggered by landing 3, 4, or 5 of the scatter symbols anywhere in view. Here, you can win up to 100 free spins, and the expanding wilds give you the potential to win up to 670X your stake on every spin.

Joker Strike

Joker Strike comes to us from Quickspin - a Swedish developer behind world-renowned titles like Sakura Fortune and Second Strike. The latter is the prequel to Joker Strike, and the new release is built around a 5-reel, 3-row format. There are 10 fixed paylines in play, and you can spin the reels from as little as ten pence per spin.

The game’s ultra-high RTP of 98.11% is activated while playing the “Hi-Roller” spins, and here, you’ll be guaranteed a wild symbol on each spin. Wild spins will also be added to the outer reel, which is activated when a win is formed.

Book of 99

Book of 99 is a video slot from Relax Gaming, and while it’s yet another “Book of…” game to appear in the online gambling world, it’s one that’s worth checking out. The game offers an RTP of as high as 99% - a clever gimmick, but one that ensures players can enjoy lengthy playing sessions - and along with the standard expanding symbols bonus round, there’s a unique collection feature in play, too.

During the base game, any time one of the scatter symbols lands in view, it will add to a meter on the left-hand side of the screen. Once you manage to collect 99 of these scatter symbols, the bonus round will trigger automatically. This is a great touch, we feel, as it means you don’t need to necessarily wait for the bonus round to land naturally.

Like other “Book of…” games, Book of 99 offers a maximum win of 5,000X; however, even the low-value symbols can award decent pay, with a 100X minimum awarded for a full screen during the bonus.

Marching Legions Slot

Considering that most video slots today hover around the 96% mark in terms of RTP, it’s always refreshing to see mainstream game developers doing their part to introduce high RTP games into the market - and that’s precisely what Relax Gaming have done with one of their latest releases, Marching Legions.

The slot boasts a well above-average RTP of 98.12%. Despite this high RTP, the game offers a highly volatile maths model - ranking 4/5 on the developer’s in-house variance scale - which means it’s capable of dishing out big wins.

There’s also a super-exciting selection of bonuses and features; for example, when two or more legionnaire stacks land partially in view, there's a chance they can “nudge” to fill the entire reels. During the bonus round, the game can throw in a full screen of wilds - and doing so will award you a payout of 1,000X your bet!

Like many video slots released in recent years, Marching Legions also has a bonus buy option. This allows you to purchase direct entry to the bonus round for a cost of 120X your bet.

Bloodsuckers Slot

Bloodsuckers is a game that appears on virtually every “what slot should I play” list - and for good reason. This NetEnt release boasts a whopping 98% RTP - and it’s so high that many online casinos ban the game from being played with bonus funds!

While you’re unlikely to hit “huge” wins playing Bloodsuckers, the game does have some theoretical potential - and players can win up to 1,014X their stake on each spin during the bonus round. In addition to the free spins, there’s also a "pick me bonus" where you win cash prizes by picking from various coffins that appear on the screen.

It’s also worth pointing out that Bloodsuckers features an average hit rate of 44.9%. This means you’ll hit a winning spin almost half the time you play the game! Recently, NetEnt has also released a sequel - Bloodsuckers 2 - and we’ll likely see a third instalment in the future, too!

Jokerizer Slot

Another 98% RTP slot on this list is Jokerizer - a game from Yggdrasil, a developer known for creating beautiful-looking games. This fast-paced, action-packed online video slot is built around a 5-reel, 3-row format with 10 fixed paylines. While the game was launched back in 2016, it remains a popular choice with players.

If you’re looking for one of the highest RTP slots UK casinos offer, Jokerizer is a fantastic game to try out. During the Jokerizer mode, landing just two joker symbols anywhere in view will trigger a unique bonus - and here, it’s possible to win up to 6,000 coins - directly correlating to 6,000 times your stake! With such a high RTP, Jokerizer and the rest of the games listed on this page allow you to enjoy lengthy playing sessions. Some of the games offer significant levels of win potential, too!

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Highest Paying RTP Slots 2026

What Does RTP Mean?

What is Slot Variance?

Highest RTP Slots

Jackpot 6000

1429 Uncharted Seas

Joker Strike

Book of 99

Marching Legions Slot

Bloodsuckers Slot

Jokerizer Slot

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